Can the Panel Lockout be used on panels that don have exposed screws?
Yes, but two screws must be installed onto the panel as follows: Drill two holes with a # 7 drill bit in the panel backbox edges (at arrows, see photo below). Tap the holes with a 1/4-20 tap. Then drill two corresponding 5/16 inch holes in the panel cover. Install two 1/4-20 panel screws (truss head) through the panel cover into the panel backbox. Then, the Panel Lockout can be used with the standard instructions. When the Panel Lockout is not in use, the two panel screws can remain installed and do not detract from the appearance of the panel. An easy method to perform the above screw installation is: 1. Remove the panel cover and make sure there are no wires where you will be drilling. Replace the panel cover. 2. Drill through both the panel cover and the panel backbox at panel edge (at arrows, see photo) with a # 7 drill bit. Remove the panel cover. 3. Enlarge the two holes in the panel cover with a 5/16 drill bit. Tap the two holes in the panel backbox with a 1/4-20 tap. 4. Replace
